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run code in 300+ PHP versions simultaneously
<?php $i = new ArrayIterator(); $i->offsetSet(0, 0); $i->offsetSet(100, 100); $i->offsetSet(200, FALSE); print_r($i); print_r(count($i));
Output for 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.16 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.7
ArrayIterator Object ( [storage:ArrayIterator:private] => Array ( [0] => 0 [100] => 100 [200] => ) ) 3

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161.65 ms | 404 KiB | 182 Q